Tricks when Auto Mode is enabled
With Automatic Play mode enabled, you can hold START while turning on the system to go back to the main menu. If you have both a Gameboy Advance game pak and a Nintendo DS Cartridge in your system, holding B while turning on the system will skip the Health and Safety warnings and go straight to booting up the Gameboy Advance game in your system.

Birthday Surprises
Enter a chat room in PictoChat on the date that you entered as your birthday in the system settings. The message "Happy Birthday! Today is [your name's] birthday!" will appear. Also on your birthday, when you turn on the DS you will hear a different sound.